[oe-commits] Zhai Edwin : qemugl: Fix gl apps failure on qemu-x86-64

[git at git.openembedded.org]

Module: openembedded-core.git
Branch: master
Commit: 70c224d80c2330cbb0fa8213b0c0d5a1c87459f6
URL:    http://git.openembedded.org/?p=openembedded-core.git&a=commit;h=70c224d80c2330cbb0fa8213b0c0d5a1c87459f6

Author: Zhai Edwin <edwin.zhai at intel.com>
Date:   Tue Feb 28 16:00:49 2012 +0800

qemugl: Fix gl apps failure on qemu-x86-64

Extend commit 028968 to qemu x86-64, where stack disorder happen due to
register handling via push/pop.

[YOCTO #1927] fixed

Signed-off-by: Zhai Edwin <edwin.zhai at intel.com>
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>

---

 .../mesa/qemugl/call_opengl_fix.patch              |   40 +++++++++++++++++++-
 meta/recipes-graphics/mesa/qemugl_git.bb           |    2 +-
 2 files changed, 39 insertions(+), 3 deletions(-)

diff --git a/meta/recipes-graphics/mesa/qemugl/call_opengl_fix.patch b/meta/recipes-graphics/mesa/qemugl/call_opengl_fix.patch
index c5e3592..342f49b 100644
--- a/meta/recipes-graphics/mesa/qemugl/call_opengl_fix.patch
+++ b/meta/recipes-graphics/mesa/qemugl/call_opengl_fix.patch
@@ -16,8 +16,8 @@ Upstream-Status: Pending
 Signed-off-by: Zhai Edwin <edwin.zhai at intel.com>
 Index: git/opengl_client.c
 ===================================================================
---- git.orig/opengl_client.c	2011-09-19 19:44:51.000000000 +0800
-+++ git/opengl_client.c	2011-09-22 10:11:04.000000000 +0800
+--- git.orig/opengl_client.c	2012-02-28 15:26:28.000000000 +0800
++++ git/opengl_client.c	2012-02-28 15:29:18.000000000 +0800
 @@ -1076,23 +1076,29 @@
  {
  #if defined(__i386__)
@@ -56,3 +56,39 @@ Index: git/opengl_client.c
    __asm__ ("mov %%eax, %0"::"m"(ret));
  #ifdef WIN32
    __asm__ ("movl (%%esp),%%ecx;movl %%ecx,%%fs:0;addl $8,%%esp;" : : : "%ecx");
+@@ -1100,20 +1106,27 @@
+   return ret;
+ #elif defined(__x86_64__)
+   int ret;
+-  __asm__ ("push %rbx");
+-  __asm__ ("push %rcx");
+-  __asm__ ("push %rdx");
+-  __asm__ ("push %rsi");
++  long bx, cx, dx, si;
++
++  /* save registers before opengl call */
++  __asm__ ("mov %%rbx, %0"::"m"(bx));
++  __asm__ ("mov %%rcx, %0"::"m"(cx));
++  __asm__ ("mov %%rdx, %0"::"m"(dx));
++  __asm__ ("mov %%rsi, %0"::"m"(si));
++
+   __asm__ ("mov %0, %%eax"::"m"(func_number));
+   __asm__ ("mov %0, %%ebx"::"m"(pid));
+   __asm__ ("mov %0, %%rcx"::"m"(ret_string));
+   __asm__ ("mov %0, %%rdx"::"m"(args));
+   __asm__ ("mov %0, %%rsi"::"m"(args_size));
+   __asm__ ("int $0x99");
+-  __asm__ ("pop %rsi");
+-  __asm__ ("pop %rdx");
+-  __asm__ ("pop %rcx");
+-  __asm__ ("pop %rbx");
++
++  /* restore registers */
++  __asm__ ("mov %0, %%rbx"::"m"(bx));
++  __asm__ ("mov %0, %%rcx"::"m"(cx));
++  __asm__ ("mov %0, %%rdx"::"m"(dx));
++  __asm__ ("mov %0, %%rsi"::"m"(si));
++
+   __asm__ ("mov %%eax, %0"::"m"(ret));
+   return ret;
+ #else
diff --git a/meta/recipes-graphics/mesa/qemugl_git.bb b/meta/recipes-graphics/mesa/qemugl_git.bb
index e3552ec..66f4e17 100644
--- a/meta/recipes-graphics/mesa/qemugl_git.bb
+++ b/meta/recipes-graphics/mesa/qemugl_git.bb
@@ -18,7 +18,7 @@ S = "${WORKDIR}/git"
 SRCREV = "d888bbc723c00d197d34a39b5b7448660ec1b1c0"
 
 PV = "0.0+git${SRCPV}"
-PR = "r8"
+PR = "r9"
 
 DEFAULT_PREFERENCE = "-1"